Wires may cause frequency of collisions.Logical formLearned from3 sentences. Collisions may include visibility.Logical formLearned from3 sentences. A report may examine an issue of (bird collisions).Logical formLearned from3 sentences. (Swan collisions) may occur during (winter fogs).Logical formLearned from3 sentences. Collisions can be with (turbine blades).Logical formLearned from3 sentences. Collisions may be observed.Logical formLearned from3 sentences. An account may review literature on (bird collisions).Logical formLearned from3 sentences. Collisions may cause deaths of some swans.Logical formLearned from3 sentences. Collisions can be among causes of mortality.Logical formLearned from3 sentences. Hardware can be necessary to (bird collisions).Logical formLearned from3 sentences. (Bird collisions) can be with conductors.Logical formLearned from3 sentences. (Raptor collisions) may contribute to mortality of individuals.Logical formLearned from3 sentences. Some (raptor collisions) can be with (utility lines).Logical formLearned from3 sentences. (Bird collisions) can be with (overhead wires).Logical formLearned from3 sentences. Casualties can be from (distribution line collisions).Logical formLearned from3 sentences.